export function getObjClass (obj) {
  if (obj && obj.constructor && obj.constructor.toString()) {
    /*
     * for browsers which have name property in the constructor
     * of the object,such as chrome 
     */
    if(obj.constructor.name) {
     return obj.constructor.name;
    }
    var str = obj.constructor.toString();
    /*
     * executed if the return of object.constructor.toString() is 
     * "[object objectClass]"
     */
    if(str.charAt(0) == '[')
    {
      var arr = str.match(/\[\w+\s*(\w+)\]/);
    } else {
      /*
       * executed if the return of object.constructor.toString() is 
       * "function objectClass () {}"
       * for IE Firefox
       */
      var arr = str.match(/function\s*(\w+)/);
    }
    if (arr && arr.length == 2) {
       return arr[1];
    }
   }
   return undefined; 
 };